earthquake- the shaking and trembling that results from the movement below the Earth's surface. stress- a force that acts on rock to change its shape or volume. shearing- stress that pushes a mass of rock in opposite directions. tension- the force that pulls on the crust, stretching rock so it becomes thinner in the middle. compression- the force that squeezes rock until it folds or breaks. deformation- any change in the volume or shape of Earth's crust. fault- a break in the Earth's crust where slabs of crust slip past each other. strike-slip fault- the rocks on either side slip past each other sideways. normal fault- tension forces in the Earth's crust. hanging wall- the half of the fault that lies above. footwall- the other half of the crust that lies below. reverse fault- the reverse fault is like a normal fault, but it moves in the opposite direction. fault-block mountain- when a normal fault lifts up a block of rock. folds- bends in a rock that form because compression thickens and shortens part of the Earth's crust anticline- a fold in rock that goes upward syncline- a fold in rock that goes downward plateau- large area of flat land that is high above sea-level
Outline
Stress in the Crust
movement of the plates create powerful forces
forces are example of stress
Types of Stress
shearing
tension
compression
Kinds of Faults
Strike-slip fault
Normal fault
Reverse fault
Friction Along Faults
friction exits because Earth's surface isn't entirly smooth
Table of Contents
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Notes 2.1
earthquake- the shaking and trembling that results from the movement below the Earth's surface.
stress- a force that acts on rock to change its shape or volume.
shearing- stress that pushes a mass of rock in opposite directions.
tension- the force that pulls on the crust, stretching rock so it becomes thinner in the middle.
compression- the force that squeezes rock until it folds or breaks.
deformation- any change in the volume or shape of Earth's crust.
fault- a break in the Earth's crust where slabs of crust slip past each other.
strike-slip fault- the rocks on either side slip past each other sideways.
normal fault- tension forces in the Earth's crust.
hanging wall- the half of the fault that lies above.
footwall- the other half of the crust that lies below.
reverse fault- the reverse fault is like a normal fault, but it moves in the opposite direction.
fault-block mountain- when a normal fault lifts up a block of rock.
folds- bends in a rock that form because compression thickens and shortens part of the Earth's crust
anticline- a fold in rock that goes upward
syncline- a fold in rock that goes downward
plateau- large area of flat land that is high above sea-level
Outline
Stress in the Crust
Types of Stress
Kinds of Faults
Friction Along Faults
Mountain Building